Re: [PATCH] perf bpf-filter: Return -1 directly when pfi allocation fails

[Arnaldo Carvalho de Melo <acme@kernel.org>]

On Tue, Nov 12, 2024 at 10:28:15AM +0800, Hao Ge wrote:
> From: Hao Ge <gehao@kylinos.cn>
> 
> Directly return -1 when pfi allocation fails,

The convention for this function is to return -errno, so please resubmit
returning -ENOMEM.

- Arnaldo

> instead of performing other operations on pfi.
> 
> Fixes: 0fe2b18ddc40 ("perf bpf-filter: Support multiple events properly")
> Signed-off-by: Hao Ge <gehao@kylinos.cn>
> ---
>  tools/perf/util/bpf-filter.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/bpf-filter.c b/tools/perf/util/bpf-filter.c
> index e87b6789eb9e..34c8bf7e469e 100644
> --- a/tools/perf/util/bpf-filter.c
> +++ b/tools/perf/util/bpf-filter.c
> @@ -375,7 +375,7 @@ static int create_idx_hash(struct evsel *evsel, struct perf_bpf_filter_entry *en
>  	pfi = zalloc(sizeof(*pfi));
>  	if (pfi == NULL) {
>  		pr_err("Cannot save pinned filter index\n");
> -		goto err;
> +		return -1;
>  	}
>  
>  	pfi->evsel = evsel;
> -- 
> 2.25.1